JPH0623992Y2 - Electronic watch clock case - Google Patents

Description

Detailed Description of the Invention [Technical Field of the Invention] This invention relates to a watch case of an electronic wrist watch.

[Prior art and its problems]

In recent years, electronic wrist watches having a calculation function, an alarm function and the like have been developed and commercialized. This kind of electronic wrist watch has a flat watch case, as shown in Japanese Utility Model Laid-Open No. 186492/1983, and a display section and a key button section for calculation functions are provided on the upper surface thereof. . Therefore, there is a problem that the display section for displaying information such as time is restricted by the key button section, and not only the area thereof becomes small but also the entire watch case becomes large.
Particularly, in an electronic wrist watch with a calculation function, since the display section and the key button section are flatly arranged, there is a disadvantage that the operability of the keys is poor. In particular, when the key itself is large, when the key is attached, air is attached between the key and the upper surface of the watch case where the key is attached, and the key cannot be operated properly. There were some inconveniences.

[Purpose of device]

The present invention has been made in consideration of the above circumstances, and the purpose thereof is to provide an electronic device which is relatively compact even if a key is provided and which has excellent operability of the key. It is to provide a watch case for a watch.

[Key points of device]

In order to achieve the above-mentioned object, the present invention bends a watch case at a predetermined angle to form an inclined portion with synthetic resin, and forms a recess in the inclined portion to arrange a key, and
A through hole penetrating the inside of the timepiece main body is provided in the recess, and a groove for air escape at the time of attaching a key connected to the through hole is formed in the bottom surface of the recess.

[First Embodiment] A first embodiment of the present invention will now be described with reference to FIGS. 1 to 3.
An example will be described.

FIG. 1 is an exploded perspective view of an essential part of an electronic wrist watch with a calculation function, FIG. 2 is a sectional view of an assembled state, and FIG. 3 is an enlarged sectional view of the essential part thereof, in which 1 is a watch case. The watch case 1 is made of synthetic resin, and the right half of the watch case 1 is bent downward by a predetermined angle (about 20 degrees) and has a flat portion 1a.
And an inclined portion 1b are integrally formed, and mounting portions 1c, 1c for a watch band (not shown) are formed at respective ends thereof.

As shown in FIG. 2, the flat portion 1a has a watch glass 2 on its upper surface.
Are attached by the double-sided adhesive tape 2a, the module 3 is arranged inside the inclined portion 1b, and the back cover 4 is attached to the lower surface over the lower surface of the inclined portion 1b. The module 3 is a main part that performs a timepiece function and a calculation function, and is provided with a circuit board 7 between the upper housing 5 and the lower housing 6, and a part of these cuts into the inclined portion 1b. In this case, the LSI 8 is provided on the upper surface of the circuit board 7, and the liquid crystal display device 9 is arranged above the LSI 8 via the interconnectors 9a and 9a. The liquid crystal display device 9 displays information such as time and calculation, and corresponds to the bottom of the watch glass 2 described above. A battery 10 is arranged below the circuit board 7 and is held by the main plate 11. The base plate 11 is arranged on the lower surface of the lower housing 6 and is locked to the protrusions 6 a and 6 a provided on the side wall of the lower housing 6. In addition, the module 3 is the module pressing ring 12 of the back cover 4.
The back cover 4 is attached to the lower part of the timepiece case 1 via the waterproof ring 13 by means of the waterproof ring 13.

On the other hand, as shown in FIG. 1, the inclined portion 1b of the timepiece case 1 has a concave portion 14 formed in the upper surface thereof, and the seat key 15 is arranged in the concave portion 14. That is, the recess 14 is a quadrilateral relatively thin one formed over substantially the entire upper surface of the inclined portion 1b, and the step portion 14a is formed in a frame shape on the entire inner circumference thereof, and the inside of the step portion 14a is Further, the bottom surface 14b is formed one step lower. As a result, the recess 14 has a depth of two steps. Further, a slit-shaped elongated insertion hole 14c is formed in the step portion 14a on the upper side (the flat portion 1a side) of the recess 14. The insertion hole 14c penetrates from the inside of the recess 14 into the inside of the timepiece case 1, and guides a part of the seat key 15 into the inside of the timepiece case 1. Further, a groove 14d for venting air is formed in a substantially "H" shape on the bottom surface 14b of the recess 14, and the center portion thereof is guided to the insertion hole 14c. This groove 14d
The air escapes when the sheet key 15 is bonded to the bottom surface 14b.

As shown in FIG. 3, the sheet key 15 is formed by stacking a print sheet 16, an upper contact sheet 17, a spacer 18, and a lower contact sheet 19 in order from the top, and has flexibility, and has a timepiece case 1 The concave portion 14 formed in the inclined portion 1b of the
It is glued inside. That is, the uppermost printing sheet 1b is made of a transparent transparent film, and the back surface has key symbols (for example, 1 to 0, +,-,
(×, ÷, etc.) are printed as shown in FIG. 1 so that they can be seen from the upper surface, and the upper contact sheet 17 is integrally bonded to the lower surface. The upper contact sheet 17 is bent when the print sheet 16 is pressed from above,
Movable contacts 17a ... Are provided on the lower surface in correspondence with the key symbols of the print sheet 16. The spacer 18 is a sheet in which openings 18a are formed at positions corresponding to the movable contacts 17a, and the upper surface is bonded to the upper contact sheet 17,
The peripheral portion of the lower surface is adhered onto the step portion 14a of the recess 14. The lower contact sheet 19 is arranged under the spacer 18, and the lower surface thereof is adhered to the bottom surface 14b of the recess 14 with an adhesive material 19f such as a double-sided adhesive tape, and the fixed contacts 19a ... The movable contacts 17a of the seat 17 are provided separately from each other. That is, when the key symbol of the print sheet 16 is pressed, the fixed contacts 19a ... Are brought into contact with the movable contacts 17a of the upper contact sheet 17 through the openings 18a of the spacer 18 and short-circuited, as shown in FIG. It is provided on the upper surface of the lower contact sheet 19. Moreover, each of the fixed contacts 19a ... Is guided to the lower surface side through through holes 19b provided in the lower contact sheet 19, and the electrode terminals 19c.
It is connected to the. In this case, an extension portion 19d extending from the concave portion 14 of the inclined portion 1b is formed on one side (left side in FIG. 1) of the lower contact sheet 19, and the electrode terminal 19c is formed on the lower surface of the extension portion 19d. ... are arrayed. Also,
As shown in FIG. 3, the extending portion 19d is inserted into the inside of the timepiece case 1 through the insertion hole 14c of the recess 14, and the inserted portion is pressed against the upper housing 5 of the module 3 and is attached to the lower surface thereof. The formed electrode terminals 19c ... Are electrically connected to the circuit board 7 through the interconnector 20.

In the electronic wristwatch constructed in this manner, the time is normally displayed on the liquid crystal display device 9 of the module 3, but the mode is set by the changeover switch (not shown) to set the calculation mode, and the sheet key 15 is pressed. When the operation is performed, calculation data corresponding to the operation is given to the module 3, and information such as the calculation data and the calculation result is displayed on the liquid crystal display device 9.
Are displayed in sequence.

However, according to the electronic wrist watch as described above, since the timepiece case 1 integrally formed of the synthetic resin bent at a predetermined angle is provided, the timepiece case 1 does not need to be made large.
The surface area can be increased, and further, the timepiece case 1 is bent to integrally form the flat portion 1a and the inclined portion 1b, and the module 3 arranged inside the flat portion 1a is bited into the inclined portion 1b. Since this is done, the timepiece case 1 can be made particularly compact. By the way,
The size of the electronic wrist watch described above is as follows.
That is, the length of the flat portion 1a of the watch case 1 is 22 to 25 m.
m, the length of the inclined portion 1b is 18 to 20 mm, the length of the module 3 is 26 to 30 mm, and the total thickness is about 4 to 6 mm, and an extremely compact product can be obtained.

Further, in the electronic wrist watch as described above, since the seat key 15 is provided on the bent inclined portion 1b of the timepiece case 1, the operability of the key is good and the seat key 15
When the is operated, the information displayed on the liquid crystal display device 9 is not hidden by a finger or the like, and the display is easy to see. Moreover, since the inclination of the inclined portion 1b is 20 degrees with respect to the flat portion 1a, it is easy to fit the arm and can be attached very well. Further, the inclined portion 1 to which the sheet key 15 is attached
The bottom surface 14b of the concave portion 14b of FIG.
Therefore, when the lower contact sheet 19 of the sheet key 15 is adhered, air bubbles do not occur between the bottom surface 14b and the lower contact sheet 19, and the lower contact sheet 19 is properly attached. be able to.

Second Embodiment Next, referring to FIGS. 4 and 5, the second embodiment of the present invention will be described.
An example will be described.

The watch case 30 is made of synthetic resin, and a left half of the watch case 30 has a shape bent downward by a predetermined angle (about 20 degrees).
The flat portion 30a and the inclined portion 30b are integrally molded, and mounting portions 30c and 30c for a watch band (not shown) are formed at respective ends thereof. In this case, the watch case 30 directly incorporates the factor parts described later, and its thickness is smaller than that of the watch case 1 of the first embodiment described above.

That is, as shown in FIG. 4, the flat portion 30a is provided with a watch glass 31 on the upper surface thereof by an adhesive material 31a such as a double-sided adhesive tape and a switch 32 described later, and the liquid crystal is provided inside. A display device 33 and a circuit board 34 are incorporated. The liquid crystal display device 33 displays information such as time and calculation, and the flat portion 30a
Of the circuit board 34, which is arranged on the upper side in the interior of the circuit board and is close to the watch glass 31 via the interconnector 33a.
Electrically connected to. The circuit board 34 has a flat portion 30.
The flat portion 30 is disposed on the lower side of the inside of a and is fixed by the screws 34a.
a is attached to the interconnector 33a
The liquid crystal display device 33 is pressed down via the. In this case, the left side of the circuit board 34 extends into the inclined portion 30b, and the right side thereof extends below the switch 32.
An LSI 34b is provided on the upper surface of the circuit board 34.

On the other hand, as shown in FIGS. 4 and 5, the inclined portion 30b has a concave portion 35 formed on the upper surface thereof and a battery housing portion 36 formed therein. The concave portion 35 is a quadrangular and relatively thin portion formed on almost the entire upper surface of the inclined portion 30b, and a sheet key 37 is adhered to the inside thereof, and the central portion thereof communicates with the lower battery storage portion 36. A slit-shaped elongated through hole 35a is formed. In this case, as shown in FIG. 5, the sheet key 37 is formed by integrally stacking a print sheet 38, a spacer 39, and a contact sheet 40 from the top, and a heat seal 41 is connected to the lower surface thereof. . Top printed sheet 38
Is a flexible film, and the surface has key symbols necessary for calculation (for example, 1 to 0, +, −, ×, ÷
Etc. are printed in the same manner as in the first embodiment, and movable contacts 38a ... Are provided on the lower surface in correspondence with the key symbols. The spacer 39 is a sheet in which openings 39a ... Are formed at locations corresponding to the movable contacts 38a .. The contact sheet 40 is bonded to the lower surface of the spacer 39. The contact sheet 40 is adhered to the inside of the recess 35 of the inclined portion 30b by the adhesive 40b, and the fixed contacts 40a are provided on the upper surface in correspondence with the movable contacts 38a of the print sheet 38. That is, when the print sheet 38 is pressed, the fixed contacts 40a ...
The movable contacts 38a of the print sheet 38 are brought into contact with each other through the openings 39a of the spacer 39 and short-circuited, and each electrode thereof is guided to the lower surface of the contact sheet 40 and each electrode of the heat seal 41 adhered to the lower surface ( (Not shown). The heat seal 41 is a flexible sheet,
An electrode pattern (not shown) for connection is provided on the surface of the contact sheet 40, one end of which is as described above.
And the other end through the through hole 35a of the recess 35 formed in the inclined portion 30b of the watch case 30.
6 is introduced into the flat portion 30a of the watch case 30 along the inner upper surface of the battery storage portion 36 and is disposed above the circuit board 34, and electrically connected to the circuit board 34 by the interconnector 42. It is connected to the. A button type battery 43 is stored in the battery storage portion 36 of the inclined portion 30b. Each electrode of the battery 43 is electrically connected to the circuit board 34 in the flat portion 30a by an electrode plate 43a and a battery pressing plate 43b which also serves as an electrode plate. A back cover 44 is provided at the bottom of the watch case 30 with the flat portion 30a and the inclined portion 3a.
0b is fixed by a fixing screw (not shown) via a waterproof packing 44a. In this case, the back cover 4
Reference numeral 4 denotes a flat plate, and the left side thereof is bent and inclined similarly to the inclined portion 30b.

The flat portion 30a has a switch 3 as shown in FIG.
Two are provided. The switch 32 is for performing time adjustment, mode switching, etc., and includes a button portion 32b and a shaft portion 32c made of conductive rubber on one elastic rubber sheet 32a.
Are integrally formed and are housed in a housing recess 45 formed in the flat portion 30a. That is, in the switch 32, the peripheral edge of the elastic rubber sheet 32a is adhered to the peripheral edge of the storage recess 45 with adhesives 4b and 31a such as double-sided adhesive tape, and the button 32b has the opening 3 formed in the watch glass 31.
It protrudes upward through the inside of 1b. Further, the shaft portion 32c made of conductive rubber has a through hole 4 formed in the storage recess 45.
It is vertically movably inserted into the flat portion 5a and faces a fixed contact portion (not shown) provided on the circuit board 34 in the flat portion 30a with a space therebetween. As a result, when the button portion 32b of the switch 32 is pushed from above, the elastic rubber sheet 32a bends to push down the shaft portion 32c, and the conductive rubber (movable contact) of the shaft portion 32c is fixed to the fixed contact portion of the circuit board 34. It comes in contact with and can be separated from the contact, and the fixed contact part short-circuits and turns on. The switch 32 is waterproofed by adhering the peripheral edge of the elastic rubber sheet 32a with adhesive materials 31a and 4b such as double-sided adhesive tape.

However, according to the electronic wrist watch configured in this way,
The liquid crystal display device 33 and the circuit board 3 are directly attached to the watch case 30.
4, and electronic components such as the button type battery 43 are incorporated, the overall thickness can be made thinner than that of the first embodiment described above. By the way, the thickness of the electronic wrist watch of the second embodiment is about 2 to 3 mm, and an extremely compact one can be obtained.

The invention is not limited to the above-described embodiments, but can be variously modified.

[Effect of device]

As described above, according to the timepiece case of the electronic wrist watch of the present invention, since the flat portion and the inclined portion bent at a predetermined angle with respect to the flat portion are integrally formed by the synthetic resin, even if the key is provided, Not only can it be made relatively compact, but a groove for air escape is formed in the attachment part of the key, and the end of this groove is connected to the through hole that penetrates inside the watch body At times, the air between the key and the upper surface of the watch case on which the key is mounted can be removed through the through hole, and the air will be attached to the key case, making it impossible to perform good key operation. This has the excellent advantage that the inconvenience can be prevented and the key operation is easy.

[Brief description of drawings]

1 to 3 show a first embodiment of the present invention, FIG. 1 is an exploded perspective view of a main part thereof, FIG. 2 is a sectional view in an assembled state, and FIG. 3 is an enlarged sectional view of the main part. , Figures 4 and 5
FIG. 4 shows a second embodiment of the present invention, FIG. 4 is an overall sectional view thereof, and FIG. 5 is an enlarged sectional view of its essential part. 1, 30 ... Watch case, 1a, 30a ... Flat part, 1
b, 30b ... inclined part.

Claims (1)

[Scope of utility model registration request] 1. A wristwatch case main body having a storage part for accommodating a timepiece mechanism inside and a watch glass attached to the upper surface thereof, and an inclined part formed at a predetermined angle with respect to the wristwatch case main body. In the watch case of the electronic wristwatch, the slanted portion penetrates from a concave portion into which a sheet-shaped key is mounted and a part of the concave portion to the storage portion of the timepiece mechanism of the timepiece main body portion. A through hole into which the extended portion of the sheet-shaped key is inserted; and a groove for removing air when the sheet-shaped key is attached, which is formed in the bottom surface of the recess so that the end portion is connected to the through hole. A watch case for an electronic wrist watch, which is characterized by being provided.